Antifriction bearing



D66- 22, 1931. R. w. DULL. 1,837,415

l ANTIF'RICTIN BEARING Filed Sept. 9, 1929 ing sleeves;

Patented Dee. 22, 1931 UNIT-ED STATI-:s

.PATENT OFFICE.

RAYMONDV W. DTTLI, OF CHICAGO, ILLINOIS, .ASSIGNOR TO LINK-BELT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS .ANTIFR-ICTION BEARING- Application led September 9, 192,9. Serial No. 391,138.`

My invention relates to anti-friction bearings especially of the roller type.

As illustrated my inventionis applied speciiically to the tapered roller bearing ltype of roller bearing as applied to shafting and has for one object to provide means for separately clamping a pair of roller bearings upon a shaft while holding them in fixed working relation to the end that each bearing may be separately, rigidly mounted on the shaft by means interposed directly between the bearing and the shaft so that there will be no possible distortion or bending or strain other than compression strain between the bearing and the shaft.

Among the-objects of my invention are to provide means for holding the two locking or clamping sleeves against relative rotation be-` fore they are tightened upon` the shaft. It will be understood that this is of the utmost importance because since such a device as mine is primarily applicable to undersize shafting and since the bearing is ordinarily assembled on the shaft with the parts in assembled position and the locking of the bearing on the shaft takes place last if there is much friction between the tightening nut and the thread on the wedging or clamping sleeve, that sleeve will rotate with the nut and the nutl will be unable to travel yalong the thread to -clamp it. An important feature of my invention therefore is to providemeans whereby the two nuts may be operated or controlled simultaneously and one nut serve as a support or abutment for the other to preventundesired rotation of the clamping sleeve, this being done, of course, by the. provision of means to prevent relative rotation of the two clamping sleeves.

My invention is'` illustrated more or` less diagrammatically in the accompanying drawings whereinf- Figure l is a partial sectionythrough a bearing incorporating my invention; f

Figure 2 is aside elevation of the two lock- Figure 3' is a section 3 3 -of Figure 2;

Figure 4 is a perspective Vview of one form of sleeve interlocking-key:

taken along the line Figure 5 is a side elevation illustrating surface A2. This bushing is bored out centra-lly cylindrical.V A4 A5 are the exterior races of a pair of roller bearings, they are exteriorly cylindrical, interiorly tapered with their larger interior diameters adjacent. These races are flanged at their outer ends as at A6 to engage the usual type of antifriction rollers A", nested together and provided vwith spacers A8. A9 A1o are the inner races exteriorly tapered as indicated with their larger diameters adjacent abutting side to side andv interiorly tapered with their larger interior diameters adjacent.

B B1 are tapered wedge sleeves interiorly cylindrical to engage the shaft, exteriorly vtapered to engage the tapered portions of [he inner races. These sleeves have cylindrical extensions B2 B3 threaded and engaged by adjusting and clamping nuts B4 B5, which nuts extend inwardly to engage the outer faces of the inner roller races. The sleeves are slotted as indicated at Bf?. These slots may extend only through the tapered portion, may extend clear through the sleeve and there may loe one or lmore slots depending upon the size of thebearing, the material of which the sleeves are made andtheir comprcssibility, there being in any'pcase a suiiicient number of slots so that when the nutsare tightened up, drawing the sleeves outwardly by the key if). This key maybe made a drive t in the slots and one or more keys may be used. The ends of the key may be upset as indicated at C1 to 'form a hook, or the ilexible key C2 may be used, the key being merely bent or corrugated to holditself in theslot by riction, the key being adapted to give or spring when the bushings are compressed. The upset key may be a drive fit if desired. The main purpose of this key is to lock the two sleeves against relative rotation so that when one nut is turned, the other one beingA held, the two sleeves will be locked against relative rotation and the nut will turn on the sleeve, traveling along a thread and drawing the sleeve outwardly to wedge it between the` race and the shaft.

v In Figure 8 is shown a modification wherein the roller-races A9 A10 are held positively in engagement by a hook D which extends through the slots B6 in the wedge rings or sleeves thereby holding them against relative rotation while ermitting them to move longitudinally and at the same time by direct engagement with the races themselves holding them to ether so that in adjusting the device the rolIer races are always held in snug contact at their ends.

It will be evident that while I have shown in my drawings an operative device, still many changes might be made in the size, shape, arrangement and disposition of parts without departing materially from the spirit of my invention and I wish, therefore, that my showing be taken as in a sense diagrammatic.

`I claim:

1. In combination two abutting anti-friction bearing races interiorly tapered with their major diameters adjacent, two compression sleeves cylindrical to engage a shaft, exteriorly tapered to en age the. tapered bores of the races and threa ed at their outer ends where they extend beyond the races, a nut on each such threaded outer end ada ted to engage the outer face of one of t e bearing races, a key interposed between the two sleeves and adapted to resist relative rotation while leaving them free to be moved longitudinally with respect each to the other, the key being adapted to be engaged and locked in position by the nut when it is screwed home.

2. In combination two abutting anti-friction bearing races interiorly tapered with their major diameters adjacent, two compression sleeves cylindrical to engage a shaft, exteriorly tapered to enga e the tapered bores of the races and threade at their outer ends where they extend beyond the races, a nut on each such threaded outer' end adapted to engage the outer face of one of the races, a key interposed betweenV the two sleeves and adapted to resist relative 'rotation while leaving them free to be moved longitudinally with lrespect each to the other, the keybeing adapted to releasably hold the sleeves together, to positively and permanently hold them against relative-rotation and to permit relative longitudinal movement of the sleeves.

3. In combination two abutting anti-friction bearings interiorly tapered with their major diameters adjacent, two separate compression sleeves interiorly cylindrical to engage a shaft, exteriorly tapered to engage the tapered bore of inner races, threaded at their outer ends where they extend beyond the inner races, a nut on each such threaded outer end adapted to engage the outer face of one of the inner bearing races and displace the sleeve longitudinally with respect to the race, means interposed between the sleeves for preventing relative rotation, said meansbeing adapted yieldingly to hold them against relative longitudinal movement for assembly, but adapted to yield to permit them to be moved longitudinally when they are seated in the inner races. 4. In combination two abutting anti-friction bearings interiorly tapered with their l major diameters adjacent, two separate compression sleeves interiorly cylindrical to en gage a shaft, exteriorly tapered to engage the tapered bore of inner races, threaded at their outer ends where they extend beyond the inner races, a nut on each such threaded outer end adapted to engage the outer side of one of the bearing inner races and displace the sleeve longitudinally with respect to the inner race, means interposed between the sleeves for preventing relative rotation, said means being adapted yieldingly to hold them against relative longitudinal movement for assembly but adapted to yield to permit them to be moved longitudinally when they are seated in the inner races, said means comprising a yielding member interlocking with one of the the sleeve longitudinally with respect to the inner race, means inte osed betweenl the sleeves for preventing re ative rotation, said means being adapted ieldingly to hold them against relative ongitudmal movement for assembly but adapted to ield tov permit them to be moved longitudinal y when they are seated in the inner races, said means comprising a yielding member interlocking with bothof said sleeves.

6.` In combination two abutting anti-friction bearingsv interiorly tapered with their major diameters adjacent, two separate compression sleeves interiorly cylindrical to engagea shaft, exteriorly tapered to engage the tapered bore of inner races, threaded at thelr outer ends where they yextend beyond the. 5 inner races, a nut on each such threaded outer end adapted to engage the outer side of one of the inner bearing races and displace the sleeve longitudinally with respect to the inner race, means interposed between the 10 sleeves for preventing relative rotation, said means being adapted yieldingly to hold them against relative ongitudinal movement for assembly but adapted to yield to permit them to be moved longitudinally 15 when the are seated in the inner races, said means comprising amember extending parv tially through said sleeves and upset at either end tov hold them together, the upset portion being` adapted to be drawn out to permit 2 movement when power is applied to the nut Ithreaded on the sleeve. 7. In combination two abutting anti-friction bearings interiorly tapered with their major diameters adjacent two compression sleeves cylindrical to engage a shaft, exteriorly ytapered to engage the tapered bore of inner races and threaded at their outer lends where they extend beyond the inner races, a nut Von each such threaded outer end adapted to engage the 'outer face of one of the bearing inner races, a key interposed be-- tween the two sleeves and adapted to limit relative rotation while leavin them free to be moved longitudinally wit respect each to the other, said 'key having hooked extensions to engage the inner races and hold them in snug'engagement one with another. 8. In combination two abutting anti-fric: 'tion bearing races interiorly tapered with their major diameters adjacent two com ression sleeves cylindrical to enga e af s aft, exteriorly tapered to engage the tapered bore of inner races and threaded at their ends whereJ they extend beyond the races, a nut on each such threaded outer end adapt- 4 edl to engage the outer side of one of the inner bearing races, a key intelosed between the two sleeves and adapte to limit so relative rotation while leaving them to l be moved longitudinally with respect each to the other, the key being adapted to engage and permanently hold theltwo tapered under races together.

, signed at Chicago, @my of Cook and tate of Illinois, this 9th day of A 1929.

l RAYMOND w. 

